From 65e29d33c2398c79dab7a00ae99fc8247c384d21 Mon Sep 17 00:00:00 2001
From: tupoy-ya <72797377+tupoy-ya@users.noreply.github.com>
Date: Sun, 18 May 2025 18:52:12 +0500
Subject: [PATCH] feat: Cheater Pool. (#318)

Barely tested.

Co-authored-by: tupoy-ya <tupoy-ya@users.noreply.github.com>
---
 src/core/hooking/Hooking.cpp              |  2 ++
 src/game/features/network/CheaterPool.cpp | 37 +++++++++++++++++++++++
 src/game/frontend/submenus/Network.cpp    |  1 +
 src/game/hooks/Hooks.hpp                  |  1 +
 src/game/pointers/Pointers.cpp            | 16 ++++++++++
 src/game/pointers/Pointers.hpp            |  3 ++
 6 files changed, 60 insertions(+)
 create mode 100644 src/game/features/network/CheaterPool.cpp

diff --git a/src/core/hooking/Hooking.cpp b/src/core/hooking/Hooking.cpp
index 56a6707..786f7e0 100644
--- a/src/core/hooking/Hooking.cpp
+++ b/src/core/hooking/Hooking.cpp
@@ -37,6 +37,8 @@ namespace YimMenu
 		BaseHook::Add<Hooks::Spoofing::WriteSyncTree>(new DetourHook("WriteSyncTree", Pointers.WriteSyncTree, Hooks::Spoofing::WriteSyncTree));
 
 		BaseHook::Add<Hooks::Features::OpenPauseMenu>(new DetourHook("OpenPauseMenu", Pointers.OpenPauseMenu, Hooks::Features::OpenPauseMenu));
+
+		BaseHook::Add<Hooks::Network::GetPoolType>(new DetourHook("GetPoolType", Pointers.GetPoolType, Hooks::Network::GetPoolType));
 	}
 
 	Hooking::~Hooking()
diff --git a/src/game/features/network/CheaterPool.cpp b/src/game/features/network/CheaterPool.cpp
new file mode 100644
index 0000000..5db4089
--- /dev/null
+++ b/src/game/features/network/CheaterPool.cpp
@@ -0,0 +1,37 @@
+#include "core/commands/BoolCommand.hpp"
+#include "core/hooking/DetourHook.hpp"
+#include "game/hooks/Hooks.hpp"
+#include "game/pointers/Pointers.hpp"
+
+namespace YimMenu::Features
+{
+	class CheaterPool : public BoolCommand
+	{
+		using BoolCommand::BoolCommand;
+
+		virtual void OnEnable() override
+		{
+			Pointers.SetJoinRequestPoolTypePatch->Apply();
+			Pointers.HandleJoinRequestIgnorePoolPatch->Apply();
+		}
+
+		virtual void OnDisable() override
+		{
+			Pointers.SetJoinRequestPoolTypePatch->Restore();
+			Pointers.HandleJoinRequestIgnorePoolPatch->Restore();
+		}
+	};
+
+	static CheaterPool _CheaterPool{"cheaterpool", "Cheater Pool", "Matchmaking will put you into sessions with other YimMenu users.", true};
+}
+
+namespace YimMenu::Hooks
+{
+	int Network::GetPoolType()
+	{
+		if (YimMenu::Features::_CheaterPool.GetState())
+			return 1;
+
+		return BaseHook::Get<Network::GetPoolType, DetourHook<decltype(&Network::GetPoolType)>>()->Original()();
+	}
+}
\ No newline at end of file
diff --git a/src/game/frontend/submenus/Network.cpp b/src/game/frontend/submenus/Network.cpp
index f8d8623..babf5b2 100644
--- a/src/game/frontend/submenus/Network.cpp
+++ b/src/game/frontend/submenus/Network.cpp
@@ -94,6 +94,7 @@ namespace YimMenu::Submenus
 		spoofMMRegion->AddItem(std::make_shared<BoolCommandItem>("spoofmmregion"_J, "Spoof Region"));
 		spoofMMRegion->AddItem(std::make_shared<ConditionalItem>("spoofmmregion"_J, std::make_shared<ListCommandItem>("mmregion"_J, "##mmregion")));
 		matchmakingGroup->AddItem(spoofMMRegion);
+		matchmakingGroup->AddItem(std::make_shared<BoolCommandItem>("cheaterpool"_J));
 		spoofing->AddItem(matchmakingGroup);
 	
 		AddCategory(std::move(session));
diff --git a/src/game/hooks/Hooks.hpp b/src/game/hooks/Hooks.hpp
index 8e8d3a6..74ec357 100644
--- a/src/game/hooks/Hooks.hpp
+++ b/src/game/hooks/Hooks.hpp
@@ -67,6 +67,7 @@ namespace YimMenu::Hooks
 		extern void ReceiveNetMessage(void* a1, rage::netConnectionManager* mgr, rage::netEvent* event);
 		extern void ReceiveNetGameEvent(Player player, uint16_t event_id, uint32_t event_index, uint32_t event_handled_bits, rage::datBitBuffer& buffer);
 		extern bool HandleScriptedGameEvent(Player player, CScriptedGameEvent& event);
+		extern int GetPoolType();
 	}
 
 	namespace Window
diff --git a/src/game/pointers/Pointers.cpp b/src/game/pointers/Pointers.cpp
index fda6d8d..f156075 100644
--- a/src/game/pointers/Pointers.cpp
+++ b/src/game/pointers/Pointers.cpp
@@ -353,6 +353,22 @@ namespace YimMenu
 			OpenPauseMenu = ptr.Add(1).Rip().As<PVOID>();
 		});
 
+		constexpr auto getPoolTypePtrn = Pattern<"BA CE 94 A6 ED E8">("GetPoolType");
+		scanner.Add(getPoolTypePtrn, [this](PointerCalculator ptr) {
+			GetPoolType = ptr.Sub(19).As<PVOID>();
+		});
+
+		constexpr auto setJoinRequestPoolTypePatchPtrn = Pattern<"89 86 ? ? ? ? E8 ? ? ? ? 89 C0">("SetJoinRequestPoolTypePatch");
+		scanner.Add(setJoinRequestPoolTypePatchPtrn, [this](PointerCalculator ptr) {
+			// MOV EAX, 0; 0 is the normal pool
+			SetJoinRequestPoolTypePatch = BytePatches::Add(ptr.Sub(5).As<std::uint8_t*>(), std::to_array<std::uint8_t>({0xB8, 0x00, 0x00, 0x00, 0x00}));
+		});
+
+		constexpr auto handleJoinRequestIgnorePoolPatchPtrn = Pattern<"41 83 FF 05 ? 30 43">("HandleJoinRequestIgnorePoolPatch");
+		scanner.Add(handleJoinRequestIgnorePoolPatchPtrn, [this](PointerCalculator ptr) {
+			HandleJoinRequestIgnorePoolPatch = BytePatches::Add(ptr.Add(4).As<std::uint8_t*>(), 0xEB);
+		});
+
 		if (!scanner.Scan())
 		{
 			LOG(FATAL) << "Some patterns could not be found, unloading.";
diff --git a/src/game/pointers/Pointers.hpp b/src/game/pointers/Pointers.hpp
index 34e632f..8a05c9b 100644
--- a/src/game/pointers/Pointers.hpp
+++ b/src/game/pointers/Pointers.hpp
@@ -144,6 +144,9 @@ namespace YimMenu
 		BytePatch ShouldAllowDriverLockOnPatch;
 		BytePatch AllowPausingInSessionPatch;
 		PVOID OpenPauseMenu;
+		PVOID GetPoolType;
+		BytePatch SetJoinRequestPoolTypePatch;
+		BytePatch HandleJoinRequestIgnorePoolPatch;
 	};
 
 	struct Pointers : PointerData